JP4219662B2 - Tire molding drum replacement device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
According to the present invention, a tire supporting member is mounted on a molding drum at each work station disposed along an endless or endless track while the carriage supporting the tire molding drum is moved along the track. This is related to a tire molding drum changer that replaces a specific molding drum on the track with another molding drum waiting outside the track within a predetermined tact time of each work. is there.
[0002]
[Prior art]
Conventionally, a tire molding system that assembles tire components on a molding drum in a required order at each work station provided along the track while moving a carriage supporting a tire molding drum on the track has been conventionally used. Various types have been proposed.
[0003]
By the way, when the tire is molded while moving the molding drum in this way, the molding drum on the track, by extension, for switching the drum size of the molding drum or for the failure of the drum or the carriage, etc. Therefore, it is necessary to replace the cart that supports it with an off-track vehicle.
[0004]
Therefore, conventionally, a pull-in rail extending to the trolley yard is attached to the end portion of the end track, or a pull-out rail extending from the endless track to the trolley yard is attached to the end of use or failure The molded drum is transported to the cart storage area via the pull-in rail together with the carriage supporting it, while the other molding drums that have been waiting at the cart storage area are moved backwards on the pull-in rail together with the cart in the track. It has been proposed to replace the molding drum by inserting it into the nest.
[0005]
[Problems to be solved by the invention]
However, according to the proposed technology, in particular, the molding drum newly inserted into the track is independent from other molding drums in the track, and without interference with the other molding drums. In order to arrange at a predetermined position in the track, there is a problem that it is inevitable to interrupt the molding operation of the tire from the start to the end of the replacement operation of the molding drum and the like.
[0006]
The present invention has been made to solve such problems of the proposed technique, and the object of the present invention is to perform a predetermined work at each work station arranged along the track. It is an object of the present invention to provide a tire molding drum replacement device that can replace a molding drum directly in a short time at a predetermined position on a track without interruption.
[0007]
[Means for Solving the Problems]
The tire molding drum replacement device according to the present invention is any one of a plurality of molding drums supported by a carriage traveling on an endless or endless track and assembled with a predetermined tire constituent member at a plurality of work stations. Is replaced with another molding drum prepared outside the track, and a part of the linear portion of the track is an independent displacement portion that can be inserted into and removed from the track while supporting the carriage. A guide rail extending in a direction perpendicular to the extending direction of the independent displacement portion is laid on the lower side of the portion, and the guide rail is extended on the turntable through the discontinuous portion. A plurality of carriages are provided in the area, which are linearly aligned with the independent displacement portions and provided with retractable rails that allow the carriage supporting the molding drum to be taken in and out.
[0008]
When replacing the molding drum with this device, the molding drum that needs to be replaced, or the carriage that directly supports it, is fixed on the independent displacement part that forms part of the track, and the independent displacement part Is translated to the turntable under the action of the guide rail, and then the turntable is pivotally displaced in a horizontal plane over a predetermined angular range together with the independent displacement portion, and the independent displacement portion is turned into the turntable. The carriage is linearly aligned with the pull-in rail of one of the adjacent carts, and the carriage on the independent displacement portion is moved onto the pull-in rail together with the molding drum to be positioned and fixed there.
[0009]
After that, the independent displacement part released from the carriage etc. is aligned with the pull-in rail of another truck parking place by the revolving movement of the turntable, and the predetermined molding drum which has been kept waiting in advance on the pull-in rail is placed on the carriage. At the same time, it is taken out on the independent displacement part and positioned there.
[0010]
Furthermore, this also causes the independent displacement part to return to the original extraction posture by the turntable, resulting in a linear alignment between the guide rail part on the turntable and the remaining fixed guide rail part, The independent displacement part is put into its original functional position that constitutes a part of the track, and the carriage is released there, so that all the replacement work of the forming drum is completed and a new forming drum after the replacement is installed. , It can be reliably arranged at a predetermined position in the track.
[0011]
Therefore, here, the above-described replacement work of the molding drum has no influence on the predetermined work at each work station, in other words, the work of assembling the tire constituent members at each work station. The work efficiency of the entire tire molding system can be greatly increased compared to the previously proposed technology.
[0012]
Here, when such replacement of the forming drum can be performed in a time much shorter than the predetermined tact time of the work at each work station, for example, less than half of the tact time, the tact time It is also possible to perform a predetermined operation on the exchanged molding drum within the remaining time.
[0013]
Preferably, in such an apparatus, driving means for moving the independent displacement portion forward and backward on the guide rail is provided. According to this, the movement of the independent displacement portion between the track and the turntable can be automated, and when a cylinder such as an air cylinder is selected from various translation drive means, with a simple mechanism, There is an advantage that the predetermined movement of the independent displacement portion can be performed quickly and reliably.
[0014]
Here, when a cylinder is used as the drive means, the connecting means to the independent displacement portion is a male and female relative fitting portion provided on the rod end portion and the independent displacement portion of the cylinder, and the male side member. The locking member that restrains the female member from slipping out can be configured, and according to this, when the independent displacement portion moves forward and backward, the male and female fitting states are maintained under the action of the locking member. Thus, the required displacement can be performed. On the other hand, by releasing the mating of the male and female by, for example, the backward movement of the lock under the displacement of the lock member, the turning displacement integral with the turntable can be sufficiently allowed. .
[0015]
In addition, it is preferable that each carriage place is provided with an engaging member that is driven back and forth along the pull-in rail, for example, by a rodless cylinder or the like, and is oscillated and displaced in a vertical plane so as to be hooked on and off the carriage. According to this, the carriage on the turntable can be drawn into the carriage storage place and held there by reversing the engagement member while the engagement member is engaged with the carriage.
On the other hand, the carriage can be pushed onto the turntable by moving the engagement member forward and backward with the engagement member engaged with the carriage that stands by in the carriage storage area.
Further, the engagement member can be smoothly and quickly detached from the chassis by its swinging displacement.
[0016]
By the way, the track may be a substantially oval endless track having two linear portions that are parallel to each other and have the same length, and two arc-shaped portions that smoothly connect the two portions. It is preferable in terms of improving the station arrangement efficiency and the movement efficiency of the molding drum, and the molding work efficiency on the molding drum.
[0017]
It is to be noted that the independent displacement portion can be engaged with the guide rail by a ball circulation type slide table to improve the positioning accuracy of the independent displacement portion with respect to the width direction of the guide rail. The alignment accuracy with respect to the pull-in rail can be sufficiently increased, and the carriage can be transferred between them smoothly and smoothly.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on the drawings.
FIG. 1 is a schematic plan view showing a tire molding system to which a tire molding drum replacement apparatus according to the present invention is applied, together with a pre-molding system. In FIG. 1, 1 is a tire molding system using the present invention. Reference numeral 2 denotes a pre-molding system provided adjacent to the tire molding system 1.
[0019]
The tire molding system 1 shown here has a molding drum 3, a molding carriage 4 that cantilever-supports the molding drum 3 and rotationally drives, and an approximately elliptical shape that enables endless circulation of the molding carriage 4. Eight work stations F1 to F8 which are provided along the track 5 and are arranged along the track 5 to assemble the respective tire constituent members on the molding drum 3, and molded green tires Is provided with a work station F9 for removal from the molding drum 3.
[0020]
The preforming system 2 includes a support carriage 7 that cantilever-supports the cylindrical drum 6 and a track 8 that enables linear movement of the support carriage 7, and is arranged along the track 8. The three working stations C1 to C3 and the Slancefa carriage 9 that contributes to the molding at the working station C3 and delivers the preformed product to the molding drum 3 of the tire molding system 1 are provided.
[0021]
In the figure, reference numeral 10 denotes a tire transfer cart that receives the green tire G manufactured after the molding in the tire molding system 1 from the molding drum 3 on the track 5, and 11 denotes a tire transfer cart that is received from the tire transfer cart 10. 1 shows a conveyor for conveying green tires to a vulcanization system.
[0022]
By the way, in the preforming system, the support carriage 7 supporting the cylindrical drum 6 is moved at a predetermined tact time in order from the work stations C1 to C2, C2 to C3, and C3 to C1, and the transfer carriage 9 is moved. Reciprocating between work stations C3 and F1.
[0023]
Further, in the tire molding system 1, the molding cart 4 supporting the molding drum 3 that can be bulged and deformed in a toroidal shape is rotated clockwise between the respective work stations F1 to F9, such as the work stations F1 to F2 and F2 to F3. Is repeatedly performed at a predetermined tact time.
In the tire molding system 1 shown in the figure, eight molding trolleys 4 are arranged on the track 5, and each molding trolley 4 is moved between work stations by a drive device, and each work station And is positioned with high accuracy.
Here, it goes without saying that each molded carriage 4 can be self-propelled, but when a drive device is disposed inside the track 5, a pair of drives that govern the running motion of the linear portion of the carriage 4. Devices D1 and D2 and another pair of drive devices D3 and D4 that control the traveling motion of the arcuate portion can be provided.
[0024]
Here, of course, the positioning and holding of the molding carts 4 at the positions corresponding to the work stations F1 to F9 can be performed by the driving device itself. In order to reduce the tact time by waiting in advance at a predetermined position for the next driving of the molding cart 4, the positioning and holding is performed by a positioning holding pin and other holding means provided separately. It can also be made.
[0025]
In producing a green tire by such molding systems 1 and 2, first, each of the inner liner member and the canvas chafer member is assembled on the cylindrical drum 6 at the work station C1, and then the cylindrical shape. The drum 6 is moved to the work station C2, and each of the squeegee member and the carcass member is assembled to the outer peripheral side of the inner liner member and the canvas chafer member to form a carcass band.
[0026]
In the work station C3, a pair of preset beads whose bead fillers are preset in the bead core are set in the transfer cart 9 in advance, and the carcass formed in the work station C2 is formed radially inside the pair of preset beads. The band is inserted and disposed, and the carcass band is delivered from the cylindrical drum 6 to the transfer carriage 9.
[0027]
Thereafter, the transfer carriage 9 holding the preset bead and the carcass band is moved to the work station F1 where the molding drum 3 is on standby, and they are transferred onto the molding drum 3.
In this transfer, the bead lock portion of the molding drum 3 is expanded to fix the preset bead to the molding drum 3, and then the transfer cart 9 is released from the preset bead and the carcass band, and the transfer cart 9 Is returned to station C3.
[0028]
After carrying the preset bead and the carcass band into the molding system 1 as described above, the molding drum 3 is first moved to the work station F2, and the width of the carcass band is determined based on the diameter expansion deformation of the bladder and the rigid core. The central portion in the direction is bulged and deformed in a toroidal shape, and the side portion of the carcass member is wound back outward in the radial direction by the action of the carcass folding rod based on the operation of the external drive device 12.
[0029]
Thereafter, the molding drum 3 is sequentially moved to each of the work stations F3 to F8, stopped at each of the work stations F3 to F8, and positioned and held to perform the following work.
[0030]
At the work station F3, the inner layer belt member assembling apparatus 13 is used to assemble the inner layer belt member under the support of the external force by the expanded rigid core, and then at the work station F4, the outer layer belt member assembling apparatus 14 is installed. Use to assemble outer layer belt member.
[0031]
In the work station F5, the spiral layer member and the tread door cushion member are sequentially assembled using the layer member assembly device 15 and the tread undercushion member assembly device 16.
[0032]
At the station F6, the base tread member assembling device 17 is used to assemble the base tread member, and at the work station F7, the cap tread member assembling device 18 is used to assemble the cap tread member.
[0033]
Further, at the work station 8, side wall members are assembled on both side surfaces of the tire being molded using the side wall member assembling device 19, and at the same time, a rubber chafer member assembling device 20 is used on the radially inner side. A rubber tire is assembled to form a green tire.
[0034]
In manufacturing the green tire in this way, the molding drum 3 can be assembled from the toroidal expansion of the carcass band to the completion of the green tire with the bead locked. Compared to the conventional molding method in which the bead is unlocked during the operation and the work station must be transferred between the work stations, the tire quality such as uniformity can be greatly improved.
[0035]
The completed green tire G is removed from the molding drum 3 by the green tire transfer carriage 10 after being subjected to operations such as sticking a barcode at the final work station F9, and is transferred to the green tire conveyor 11. Delivered and thereby transported to the tire vulcanization system.
[0036]
By the way, the molding drum 3 in such a molding system 1 is configured to be able to arbitrarily change the distance between the left and right bead lock portions and the rigid cores so as to correspond to different tire widths. In this case, since it is necessary to replace the molding drum itself and deal with it, here, the drum exchange station D is placed outside the track 5 so that the molding drum can be replaced within a predetermined tact time. Is arranged adjacent to.
[0037]
That is, here, a part of the linear portion of the endless track 5 of the molding system 1 corresponding to the work station F1, as shown in FIGS. 2 and 3, respectively, is an enlarged plan view and a front view of the main part. In the state where the carriage 4 and by extension, the carriage 4 and the molding drum 3 are supported, can be inserted into and removed from the track 5, in other words, a separate independent portion that is discontinuous from the other portions of the track 5. In addition, guide rails 32 extending in a direction perpendicular to the extending direction of the independent displacement portion 31, in the drawing, three guide rails 32 are laid under the independent displacement portion 31, preferably the guides thereof. The independent displacement portion 31 is engaged with the rail 32 without play through a ball circulation type slide table 33 such as a slider of a linear motion guide.
[0038]
On the other hand, each of the guide rails 32 extends to the top of the turntable 34 and is divided into a fixed portion 32a and a rotating portion 32b with the edge of the turntable 34 as a boundary. Shall be. Here, the extension terminal position of each rotation part 32b on the turntable can be aligned with that of the shortest one.
[0039]
Here, the turntable itself is a conventionally known one, and can be swung around the central axis 4 in a horizontal plane by a rotational drive means over a required angle range. The planar contour shape of the turntable 34 is not limited to a circle, and for example, the circle is cut with a string formed corresponding to the extended end position of the shortest of the guide rail rotating portion 32b on the turntable. The shape can also be made.
[0040]
Further, in the adjacent area of the turntable 34, more precisely, in the area adjacent to the turning area of the turntable 34, the independent displacement portion 31 on the turntable 34 and the straight line in each of the height and direction. For example, a plurality of carriage storage places 36 provided with pull-in rails 35 that are aligned and allow the carriage 4 to be taken in and out are arranged at predetermined angular intervals, for example.
[0041]
Further, in these drawings, the independent displacement portion 31 in the track is translated to the turntable 34 under the guidance of the guide rail 32, and the independent displacement portion 31 on the turntable 34 is moved into the track. A cylinder 37 as an example of drive means for returning is provided. For example, the cylinder side end is fixed inside the track 5 and the rod end is detachably connected to the independent displacement portion 31.
[0042]
Here, the connection between the rod end and the independent displacement portion 31 is detachable, for example, as shown in FIG. 4, the male insertion portion 39 provided at the tip portion of the cylinder rod 38 and the independent displacement portion 31. The female-side receiving part 41 having the depression 40 corresponding to the male-side insertion part 39 and the female-side receiving part 41 inserted from the direction orthogonal to the depression 40 in the front-rear direction of the male-side insertion part 39 It can be performed by a connecting means including a lock pin 43 fitted in an annular groove 42 provided at an intermediate position. As shown in FIG. 4 (b), the male insertion portion 39 is connected to the female reception portion 41. When the lock pin 43 is engaged with the annular groove 42 of the male insertion portion 39 in the state of being inserted into the recess 40, the independent displacement portion 31 can be connected to the cylinder 37. On the other hand, as shown in FIG. 4A, the connection between the two is released by retracting the rod 38 and pulling the male side insertion portion 39 into the female side receiving portion 41 under the pulling posture of the lock pin 43. This can be done by extracting from
In such connection means, it is also possible to provide the male insertion portion 39 on the independent displacement portion side and the female reception portion 41 on the cylinder rod 38 side.
[0043]
On the other hand, the drawing of the carriage 4 on the turntable 34 into each carriage storage place 36 and the pushing of the carriage 4 onto the turntable 34 from there are shown by a schematic side view in FIG. As described above, the engaging arm 35 is swingably displaced in the vertical plane by the cylinder 46 attached to the slider 45 of the rodless cylinder 44 provided between the pair of pull-in rails 35 so as to extend in parallel therewith. 47, and each of the hooking portions 48 of the hooking arm 47 in a flange shape or a claw shape, in the drawing, in the shape of a flange, can be engaged with the carriage 4 simultaneously from both the front and rear sides thereof. .
[0044]
Note that the engagement of the engagement portion 48 to the carriage 4 can be performed in a state where the intermediate portion of the engagement arm 47 is fitted in the groove provided in the carriage 4 as indicated by a solid line in the figure. This is preferable for ensuring certainty.
[0045]
Under such a configuration, the carriage 4 is drawn into the carriage storage place 36 in a state where the engaging arm 47 is swung to the position shown by the solid line in the drawing, and the arm 47 is moved together with the slider 45 in the drawing. This can be done by moving backward to the position indicated by the phantom line. In this case, the engaging portion 48 on the front end side of the engaging arm 47 functions.
[0046]
On the other hand, the carriage 4 of the carriage storage place 36 is pushed onto the turntable 34 by moving the slider 45 from the imaginary line position to the solid line position in the drawing while the engagement portion 48 is engaged with the carriage 4. In this case, the engaging portion 48 of the engaging arm 47 near the hinge position functions.
Then, after the carriage 4 is pushed out onto the turntable 34, the carriage 4 is released by swinging the engagement arm 47 to the imaginary line position with the cylinder 46 and moving both engagement portions 48 from the carriage 4 together. This can be done with a sufficient separation.
[0047]
FIG. 5B is a rear perspective view showing another example of the cart pushing / pulling means. This is a rear end of the handle portion of the swinging frame body 49 having a rectangular frame shape instead of the above-described hook arm 47. Are hinged to the cylinder 46, the middle part of the handle is hinged to the fixed bracket, and a projection that fits within the frame of the swing frame 49, for example, a cylindrical projection 50 is provided on the lower surface of the carriage 4. It is provided.
[0048]
According to this, the swinging frame body 50 is set to a substantially horizontal posture as shown in the figure, so that the swinging frame body 50 and the cylindrical protrusion 50 are engaged with each other, and the carriage 4 based on the operation of the slider 45 is provided. The push-pull operation can be realized. On the other hand, the swing frame body 50 is swing-displaced to the lower side of the cylindrical protrusion 49 by the cylinder 46, so that the engagement can be released and the carriage 4 can be released from the swing frame body 50.
[0049]
Here, when the buffer member 51 is attached to the swing frame body 50 at a position corresponding to the front-rear direction of the carriage 4, the swing frame body 50 and the cylindrical projection when the carriage 4 is pushed and pulled. There is an advantage that the impact impact with the portion 49 can be reduced.
[0050]
Although not shown, in order to reliably prevent unexpected displacement of the independent displacement member 31 that constitutes a part of the track 5 from other track portions, the independent displacement member 31 can be moved to other track portions. It is preferable to provide a locking means that can be hooked / removed, and a fixing means for positioning and holding the carriage 4 mounted on the independent displacement member 31 and displaced together with the locking means. It is preferable to provide the replacement of the molding drum 3 smoothly and reliably.
[0051]
In exchanging the molding drum by the apparatus configured as described above, the independent displacement portion is in a state where the required molding drum 3 and the carriage 4 are positioned and fixed on the independent displacement portion 31 existing in the track 5. 2 is moved to the center position of the turntable 34 under the action of the cylinder 37 as shown by solid lines in FIGS. 2 and 3, and the turn is performed in a state where the connection between the cylinder 37 and the independent displacement portion 31 is released. The table 34 is swung over a predetermined angular range so that the independent displacement portion 31 on the table 34 is aligned with the pull-in rail 35 of the cart storage place 36 where there is no cart, as indicated by the phantom line in FIG. Then, the carriage 4 on which the fixing to the independent displacement portion 31 is released is put into the carriage storage place 36 and positioned and held there.
[0052]
As a result, the independent displacement portion 31 that has become unloaded is aligned with the pull-in rail 35 of the carriage storage place 36 in which the molding drum 3 to be used next waits in advance by the revolving motion of the turntable 34. The molding drum 3 and the carriage 4 supporting the molding drum 3 which are released from the restraint are moved onto the independent displacement portion 31 and fixed thereto.
[0053]
Thereafter, the independent displacement portion 31 on which the new molding drum 3 is placed is turned to the position parallel to the linear track portion from which the turntable 34 is placed, and then the rod end is moved to the independent displacement portion 31. The reconnected cylinder 37 is contracted and displaced, and also under the action of the guide rail 32, the independent displacement portion 31 is returned to the original position in the track 5 and fixed thereto, and a new molding drum is also added. 3 is released from the independent displacement part 31, and a series of work is completed by these.
[0054]
Such a replacement operation of the tire molding drum can be performed simply and quickly based on the movement of the independent displacement portion 31, the carriage 4 and the turntable 34 in the same plane. Since the molding drum 3 can be directly inserted into the intended process position, the predetermined work at other work stations can be continued even during the molding drum replacement work. It is also possible to continue the predetermined work on the new molding drum 3 that has been exchanged.
[0055]
【The invention's effect】
Thus, according to the present invention, in particular, a part of the linear portion of the track is an independent displacement portion, and a new molding drum is placed at a predetermined position in the tire molding process based on the parallel movement of the independent displacement portion. Therefore, it is possible to insert the molding drum quickly and directly, and to replace the molding drum without interrupting the operations at a plurality of work stations. Therefore, it is possible to greatly improve the efficiency of the tire molding operation.
[Brief description of the drawings]
FIG. 1 is a schematic plan view showing a tire molding system using an apparatus according to the present invention.
FIG. 2 is an enlarged sectional view of the present invention.
FIG. 3 is a front view showing a main part.
FIG. 4 is a view exemplifying connecting means to an independent displacement portion of a cylinder.
FIG. 5 is a schematic side view illustrating a pull-out pushing means of a cart to a cart storage place.
[Explanation of symbols]
1 Tire molding system
2 Pre-forming system
3 Molding drum
4 Molding cart
5 orbit
6 Cylindrical drum
7 Supporting cart
8 orbit
9 Transfer cart
10 Tire transfer cart
11 Green tire conveyor
13 Inner layer base member assembly device
14 Outer base member assembly device
15 layer assembly equipment
16 Tread under cushion assembly device
17 Base tread assembly device
18 Kip tread assembly equipment
19 Side wall assembly device
20 Rubber chafer assembly device
31 Independent displacement part
32 Guide rail
32a fixed part
32b Rotating part
33 Slide table
34 Turntable
35 Pull-in rail
36 trolley storage
37 cylinders
38 Cylinder rod
39 Male insertion
40 depression
41 Female side receiving part
42 Annular groove
43 Lock pin
44 Rodless cylinder
45 slider
46 cylinders
47 Hanging arm
48 hanging part
49 Swing frame
50 Cylindrical protrusion
51 cushioning member
F1-F9 work station
D Drum exchange station

Claims (7)

An apparatus for exchanging a molding drum supported by a carriage traveling on a track and assembling a predetermined tire constituent member at a plurality of work stations with another molding drum prepared outside the track,
A part of the linear portion of the track is an independent displacement portion that can be inserted into and removed from the track while supporting the carriage, and extends below the independent displacement portion in a direction perpendicular to the extending direction of the independent displacement portion. In addition to laying guide rails, the guide rails extend over the turntable through discontinuous parts, and in the adjacent area of the turntable, linearly align with the independent displacement part to allow the carriage to be taken in and out An apparatus for exchanging tire molding drums, which is provided with a plurality of carriage parking places provided with retractable rails. 2. The tire molding drum replacement device according to claim 1, further comprising driving means for moving the independent displacement portion back and forth on the guide rail. The tire molding drum replacement device according to claim 2, wherein the driving means is a cylinder. A coupling means for connecting the cylinder to the independent displacement portion, a male and female relative fitting portion provided on the rod end portion and the independent displacement portion of the cylinder, and a lock member for restraining the male side member from coming out of the female side member. The tire molding drum replacement device according to claim 3, comprising: The tire molding according to any one of claims 1 to 4, wherein an engagement member that is moved forward and backward along the pull-in rail and is oscillated and displaced in a vertical plane to be hooked on and disengaged from the carriage is provided in the carriage storage place. Drum changer. 6. The track according to any one of claims 1 to 5, wherein the track is an endless track composed of two linear portions that are parallel to each other and have the same length, and two arc-shaped portions that smoothly connect the two portions. Tire molding drum replacement device. The tire molding drum replacement device according to any one of claims 1 to 6, wherein the independent displacement portion is engaged with the guide rail by a ball circulation type slide table.

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